I was looking at Lily of the Valley (Convallaria majalis) offerings (late last year/early this year) and they recently arrived (I never see them in shops here)...Anyway...I was checking for their planting directions (google was better) when I somehow stumbled on Bletilla striata on their website (
Brecks). Not cheap, mind you but definitely offered.
Then I checked Michigan (only other bulb company to come to mind), currently out of stock but
listed for less.
I checked both for Spiranthes with no luck.
Just an FYI and a suggestions to think broader.
ETA: got lucky on ebay with mine.